Top 100 Contractors in NAICS 54: Professional, Scientific, and Technical Services, FY2024

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	General Dynamics Corporation 46 awardees, including Electric Boat Corporation, General Dynamics Information Technology, Inc. and General Dynamics Mission Systems, Inc. Top agencies Navy (Department of the Navy) HHS (Department of Health and Human Services) USAF (Department of the Air Force)	$10,366,979,516	4.2%	Rank history: #1 in FY2021, #1 in FY2022, #1 in FY2023 and #1 in FY2025; unchanged since FY2023.
2	Booz Allen Hamilton Holding Corporation 15 awardees, including Booz Allen Hamilton Inc., Liberty It Solutions LLC and Thunderyard Liberty JV LLC Top agencies VA (Department of Veterans Affairs) USAF (Department of the Air Force) Navy (Department of the Navy)	$8,337,715,928	3.4%	Rank history: #3 in FY2021, #4 in FY2022, #3 in FY2023 and #3 in FY2025; up 1 since FY2023.
3	Lockheed Martin Corporation 50 awardees Top agencies MDA (DOD Missile Defense Agency) Navy (Department of the Navy) USAF (Department of the Air Force)	$7,977,994,805	3.2%	Rank history: #2 in FY2021, #2 in FY2022, #2 in FY2023 and #2 in FY2025; down 1 since FY2023.
4	Leidos Holdings, Inc. 38 awardees, including Leidos, Inc. and Leidos Biomedical Research Inc. Top agencies Navy (Department of the Navy) HHS (Department of Health and Human Services) Army (Department of the Army)	$6,406,488,186	2.6%	Rank history: #4 in FY2021, #3 in FY2022, #4 in FY2023 and #4 in FY2025; unchanged since FY2023.
5	Science Applications International Corporation 13 awardees, including Forfeiture Support Associates LLC Top agencies USAF (Department of the Air Force) Army (Department of the Army) Navy (Department of the Navy)	$4,541,122,138	1.8%	Rank history: #7 in FY2021, #6 in FY2022, #6 in FY2023 and #7 in FY2025; up 1 since FY2023.
6	Northrop Grumman Corporation 74 awardees, including Northrop Grumman Systems Corporation Top agencies USAF (Department of the Air Force) MDA (DOD Missile Defense Agency) Navy (Department of the Navy)	$4,540,912,679	1.8%	Rank history: #5 in FY2021, #7 in FY2022, #5 in FY2023 and #6 in FY2025; down 1 since FY2023.
7	Fluor Corporation 5 awardees, including Fluor Marine Propulsion, LLC and Fluor Federal Services Inc. Top agencies DOE (Department of Energy) Navy (Department of the Navy) DHS (Department of Homeland Security)	$3,596,586,317	1.5%	Rank history: #8 in FY2021, #8 in FY2022, #7 in FY2023 and #8 in FY2025; unchanged since FY2023.
8	Deloitte 3 awardees, including Deloitte Consulting LLP, Deloitte & Touche LLP and Deloitte Financial Advisory Services LLP Top agencies HHS (Department of Health and Human Services) Treasury (Department of the Treasury) DHS (Department of Homeland Security)	$3,566,045,568	1.5%	Rank history: not on the FY2021–FY2023 lists and #9 in FY2025; new.
9	CACI International Inc. 21 awardees, including Caci, Inc. - Federal, Caci Technologies, LLC and Caci Nss, LLC Top agencies Army (Department of the Army) DHS (Department of Homeland Security) Navy (Department of the Navy)	$3,267,945,310	1.3%	Rank history: #9 in FY2021, #9 in FY2022, #8 in FY2023 and #5 in FY2025; down 1 since FY2023.
10	Accenture Federal Services LLC 4 awardees, including ASM Research, LLC and Accenture LLP Top agencies Army (Department of the Army) DOE (Department of Energy) Treasury (Department of the Treasury)	$3,243,347,952	1.3%	Rank history: not on the FY2021–FY2023 lists and #10 in FY2025; new.
11	RTX Corporation 64 awardees, including Raytheon Company, Raytheon Southeast Asia Systems Company and RTX BBN Technologies, Inc. Top agencies Army (Department of the Army) USAF (Department of the Air Force) Navy (Department of the Navy)	$3,152,087,317	1.3%	Rank history: #6 in FY2021, #5 in FY2022, #9 in FY2023 and #11 in FY2025; down 2 since FY2023.
12	California Institute of Technology 3 awardees Top agencies NASA (National Aeronautics and Space Administration) Navy (Department of the Navy) Commerce (Department of Commerce)	$2,228,419,637	0.9%	Rank history: #13 in FY2021, #10 in FY2022, #12 in FY2023 and #14 in FY2025; unchanged since FY2023.
13	Peraton Inc. 2 awardees, including Peraton Enterprise Solutions LLC Top agencies USAF (Department of the Air Force) Army (Department of the Army) HHS (Department of Health and Human Services)	$2,168,126,920	0.9%	Rank history: not on the FY2021–FY2023 lists and #12 in FY2025; new.
14	The Mitre Corporation 4 awardees Top agencies USAF (Department of the Air Force) AAFES (Department of Defense Army and Air Force Exchange Service) OSD (Office of the Secretary of Defense)	$2,148,293,924	0.9%	Rank history: #11 in FY2021, #11 in FY2022, #10 in FY2023 and #18 in FY2025; down 4 since FY2023.
15	Huntington Ingalls Industries, Inc. 12 awardees, including HII Mission Technologies Corp, Enlighten It Consulting LLC and HII Technical Solutions Corporation Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) Army (Department of the Army)	$1,949,062,284	0.8%	Rank history: #78 in FY2021, #28 in FY2022, #43 in FY2023 and #17 in FY2025; up 28 since FY2023.
16	The Boeing Company 54 awardees, including Aurora Flight Sciences Corporation and Insitu, Inc. Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) MDA (DOD Missile Defense Agency)	$1,828,436,027	0.7%	Rank history: #12 in FY2021, #16 in FY2022, #20 in FY2023 and #23 in FY2025; up 4 since FY2023.
17	BAE Systems 33 awardees, including BAE Systems Technology Solutions & Services Inc., BAE Systems Land & Armaments L.P. and BAE Systems Information and Electronic Systems Integration Inc. Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) Army (Department of the Army)	$1,721,937,755	0.7%	Rank history: #31 in FY2021, #25 in FY2022, #18 in FY2023 and #19 in FY2025; up 1 since FY2023.
18	The Johns Hopkins University Applied Physics Laboratory LLC Top agencies Navy (Department of the Navy) NASA (National Aeronautics and Space Administration) OSD (Office of the Secretary of Defense)	$1,703,077,341	0.7%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
19	L3Harris Technologies, Inc. 49 awardees, including Aerojet Rocketdyne of DE, Inc., L3 Technologies, Inc. and L3Harris Interstate Electronics Corporation Top agencies USAF (Department of the Air Force) NASA (National Aeronautics and Space Administration) Navy (Department of the Navy)	$1,630,699,550	0.7%	Rank history: #17 in FY2021, #18 in FY2022, #19 in FY2023 and #21 in FY2025; unchanged since FY2023.
20	Deployed Resources LLC Top agencies DHS (Department of Homeland Security) HHS (Department of Health and Human Services)	$1,580,075,547	0.6%	Rank history: #65 in FY2021, #37 in FY2022, #30 in FY2023 and #63 in FY2025; up 10 since FY2023.
21	Chemonics International, Inc. Top agencies USAID (US Agency for International Development)	$1,499,681,658	0.6%	Rank history: #18 in FY2021, #20 in FY2022, #27 in FY2023 and #29 in FY2025; up 6 since FY2023.
22	Battelle Memorial Institute 7 awardees, including Battelle Energy Alliance, LLC, Battelle Savannah River Alliance, LLC and Battelle National Biodefense Institute, LLC Top agencies DOE (Department of Energy) Army (Department of the Army) HHS (Department of Health and Human Services)	$1,483,495,009	0.6%	Rank history: #16 in FY2021, #14 in FY2022, #48 in FY2023 and #15 in FY2025; up 26 since FY2023.
23	The Aerospace Corporation Top agencies USAF (Department of the Air Force) NASA (National Aeronautics and Space Administration) DOE (Department of Energy)	$1,334,282,344	0.5%	Rank history: #24 in FY2021, #26 in FY2022, #28 in FY2023 and #25 in FY2025; up 5 since FY2023.
24	Massachusetts Institute of Technology Top agencies USAF (Department of the Air Force) Navy (Department of the Navy)	$1,298,795,938	0.5%	Rank history: not on the FY2021–FY2023 lists and #24 in FY2025; new.
25	Analytic Services Inc. 3 awardees, including Advanced Technology International and Professional, Acquisition, and Technical Services, Inc. Top agencies HHS (Department of Health and Human Services) OSD (Office of the Secretary of Defense) Navy (Department of the Navy)	$1,207,825,994	0.5%	Rank history: not on the FY2021–FY2022 lists, #17 in FY2023 and not on the FY2025 list; down 8 since FY2023.
26	Alliance for Energy Innovation, LLC Top agencies DOE (Department of Energy) USAID (US Agency for International Development) WHS (DOD Washington Headquarters Service)	$1,167,681,745	0.5%	Rank history: #44 in FY2021, #38 in FY2022, #24 in FY2023 and #35 in FY2025; down 2 since FY2023.
27	Parsons Corporation 17 awardees, including Parsons Government Services Inc., Ptsi Managed Services Inc. and Parsons Government Services International Inc. Top agencies USAF (Department of the Air Force) MDA (DOD Missile Defense Agency) Navy (Department of the Navy)	$1,165,800,261	0.5%	Rank history: #27 in FY2021, #27 in FY2022, #29 in FY2023 and #22 in FY2025; up 2 since FY2023.
28	International Business Machines Corporation 14 awardees, including Enterprise Electronics Corp and Merge Healthcare Solutions Inc. Top agencies Navy (Department of the Navy) Army (Department of the Army) DHS (Department of Homeland Security)	$1,155,145,085	0.5%	Rank history: #26 in FY2021, #35 in FY2022, #36 in FY2023 and #32 in FY2025; up 8 since FY2023.
29	KBR Wyle Services LLC 10 awardees, including KBR Services, LLC and Dependable Global Solutions, LLC Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) Army (Department of the Army)	$1,108,242,594	0.5%	Rank history: not on the FY2021–FY2023 lists and #27 in FY2025; new.
30	Amentum Services, Inc. 15 awardees, including JT4 LLC, PAE Labat-Anderson LLC and PAE Government Services, Inc. Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) Army (Department of the Army)	$1,080,386,630	0.4%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 165 since FY2023.
31	Serco Inc 4 awardees, including Serco-Ips Corporation and Whitney Bradley & Brown, Inc. Top agencies Navy (Department of the Navy) HHS (Department of Health and Human Services) USAF (Department of the Air Force)	$1,000,650,042	0.4%	Rank history: not on the FY2021–FY2022 lists, #80 in FY2023 and #31 in FY2025; up 49 since FY2023.
32	Caci Technologies LLC 11 awardees, including Caci, Inc. - Federal, Caci Nss, LLC and Caci Enterprise Solutions, LLC Top agencies Army (Department of the Army) Navy (Department of the Navy) USAF (Department of the Air Force)	$979,336,575	0.4%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
33	FCN, Inc. Top agencies Treasury (Department of the Treasury) USAF (Department of the Air Force) DHS (Department of Homeland Security)	$967,451,008	0.4%	Rank history: #42 in FY2021, #41 in FY2022, #32 in FY2023 and #34 in FY2025; down 1 since FY2023.
34	Oracle Health Government Services Inc. 2 awardees, including Oracle America, Inc. Top agencies VA (Department of Veterans Affairs) DISA (Defense Information Systems Agency) DHA (Defense Health Agency)	$905,430,451	0.4%	Rank history: not on the FY2021–FY2022 lists, #46 in FY2023 and #33 in FY2025; up 12 since FY2023.
35	Jacobs Government Services Company 30 awardees, including Amentum Technology, Inc., Ch2M Hill - CDM Pa-Tac Recovery Services and Jacobs / B&V, A Joint Venture (Federal Services) Top agencies NASA (National Aeronautics and Space Administration) USAF (Department of the Air Force) Navy (Department of the Navy)	$883,814,804	0.4%	Rank history: not on the FY2021–FY2023 lists and #78 in FY2025; new.
36	Four Points Technology, L.L.C. Top agencies VA (Department of Veterans Affairs) DHS (Department of Homeland Security) SSA (Social Security Administration)	$863,597,649	0.4%	Rank history: #41 in FY2021, #52 in FY2022, #47 in FY2023 and #39 in FY2025; up 11 since FY2023.
37	Tetra Tech, Inc. 50 awardees, including Ard, Inc., Tetra TECH ES, Inc. and Management Systems International, Inc. Top agencies USAID (US Agency for International Development) DOT (Department of Transportation) EPA (Environmental Protection Agency)	$847,465,504	0.3%	Rank history: #38 in FY2021, #44 in FY2022, #38 in FY2023 and #51 in FY2025; up 1 since FY2023.
38	Battelle Energy Alliance, LLC Top agencies DOE (Department of Energy)	$802,647,951	0.3%	Rank history: not on the FY2021–FY2022 lists, #15 in FY2023 and not on the FY2025 list; down 23 since FY2023.
39	Brookhaven Science Associates LLC Top agencies DOE (Department of Energy)	$797,151,609	0.3%	Rank history: #36 in FY2021, #30 in FY2022, #40 in FY2023 and #38 in FY2025; up 1 since FY2023.
40	Thundercat Technology LLC Top agencies DOS (Department of State) DOJ (Department of Justice) DHS (Department of Homeland Security)	$761,438,007	0.3%	Rank history: #47 in FY2021, #45 in FY2022, #41 in FY2023 and #36 in FY2025; up 1 since FY2023.
41	Advanced Technology International Top agencies HHS (Department of Health and Human Services) Navy (Department of the Navy) DLA (Defense Logistics Agency)	$730,107,459	0.3%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
42	Guidehouse Inc. Top agencies HHS (Department of Health and Human Services) DHS (Department of Homeland Security) DOJ (Department of Justice)	$722,669,731	0.3%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
43	Minburn Technology Group, LLC Top agencies VA (Department of Veterans Affairs) DOJ (Department of Justice) DOS (Department of State)	$699,503,695	0.3%	Rank history: #63 in FY2021, #76 in FY2022, #51 in FY2023 and #48 in FY2025; up 8 since FY2023.
44	CGI Federal Inc. Top agencies DOS (Department of State) DHS (Department of Homeland Security) DOJ (Department of Justice)	$681,803,264	0.3%	Rank history: not on the FY2021–FY2023 lists and #30 in FY2025; new.
45	ManTech International Corporation 10 awardees, including Mantech Advanced Systems International, Inc., Mantech SRS Technologies, Inc. and Tapestry Technologies, Inc. Top agencies Navy (Department of the Navy) DHS (Department of Homeland Security) USAF (Department of the Air Force)	$678,855,869	0.3%	Rank history: #25 in FY2021, #22 in FY2022, #37 in FY2023 and #37 in FY2025; down 8 since FY2023.
46	Space Exploration Technologies Corp. Top agencies NASA (National Aeronautics and Space Administration) USAF (Department of the Air Force) DOI (Department of the Interior)	$653,527,418	0.3%	Rank history: #53 in FY2021, #33 in FY2022, #35 in FY2023 and #90 in FY2025; down 11 since FY2023.
47	Torch Technologies Inc. Top agencies Army (Department of the Army) USAF (Department of the Air Force) MDA (DOD Missile Defense Agency)	$636,235,176	0.3%	Rank history: #52 in FY2021, #49 in FY2022, #49 in FY2023 and #46 in FY2025; up 2 since FY2023.
48	V3Gate, LLC Top agencies VA (Department of Veterans Affairs) DOS (Department of State) DHA (Defense Health Agency)	$633,062,422	0.3%	Rank history: #86 in FY2021, #67 in FY2022, #53 in FY2023 and #43 in FY2025; up 5 since FY2023.
49	Research Triangle Institute Top agencies HHS (Department of Health and Human Services) USAID (US Agency for International Development) ED (Department of Education)	$631,932,239	0.3%	Rank history: #56 in FY2021, #59 in FY2022, #58 in FY2023 and #82 in FY2025; up 9 since FY2023.
50	The Charles Stark Draper Laboratory, Inc. Top agencies Navy (Department of the Navy) DARPA (Defense Advanced Research Projects Agency) Army (Department of the Army)	$601,334,411	0.2%	Rank history: not on the FY2021–FY2022 lists, #91 in FY2023 and #58 in FY2025; up 41 since FY2023.
51	Sierra Nevada Company, LLC 4 awardees, including Sierra Space Corp and Kutta Technologies, LLC Top agencies USAF (Department of the Air Force) USSOCOM (United States Special Operations Command) Army (Department of the Army)	$578,630,217	0.2%	Rank history: not on the FY2021–FY2023 lists and #44 in FY2025; new.
52	HP Enterprise Services LLC 13 awardees, including Peraton Enterprise Solutions LLC, Peraton Inc. and Peraton Technology Services Inc. Top agencies HHS (Department of Health and Human Services) Army (Department of the Army) USAF (Department of the Air Force)	$573,646,487	0.2%	Rank history: #34 in FY2021, #13 in FY2022, #11 in FY2023 and not on the FY2025 list; down 41 since FY2023.
53	Credence Management Solutions Limited Liability Company Top agencies USAID (US Agency for International Development) USAF (Department of the Air Force) DLA (Defense Logistics Agency)	$558,616,965	0.2%	Rank history: #93 in FY2021, #89 in FY2022, #88 in FY2023 and #81 in FY2025; up 35 since FY2023.
54	Semanticbits LLC 4 awardees, including ICF Incorporated, L.L.C. and Incentive Technology Group LLC Top agencies HHS (Department of Health and Human Services) EPA (Environmental Protection Agency) DOT (Department of Transportation)	$555,955,532	0.2%	Rank history: not on the FY2021–FY2023 lists and #67 in FY2025; new.
55	Smartronix, LLC Top agencies Navy (Department of the Navy) DOI (Department of the Interior) CFTC (Commodity Futures Trading Commission)	$553,362,781	0.2%	Rank history: not on the FY2021–FY2023 lists and #42 in FY2025; new.
56	Arctic Slope Regional Corporation 22 awardees, including Asrc Federal System Solutions LLC, Netcentric Technology, LLC and Asrc Federal Highland Technology, Inc. Top agencies USAF (Department of the Air Force) DOT (Department of Transportation) USDA (Department of Agriculture)	$534,167,465	0.2%	Rank history: #46 in FY2021, #50 in FY2022, #54 in FY2023 and #28 in FY2025; down 2 since FY2023.
57	Georgia TECH Applied Research Corp Top agencies USAF (Department of the Air Force) Army (Department of the Army) Navy (Department of the Navy)	$522,581,795	0.2%	Rank history: not on the FY2021–FY2023 lists and #49 in FY2025; new.
58	Blue Origin Washington, LLC Top agencies NASA (National Aeronautics and Space Administration)	$484,344,302	0.2%	Rank history: not on the FY2021–FY2022 lists, #72 in FY2023 and #41 in FY2025; up 14 since FY2023.
59	Mantech Tsg-2 Joint Venture Top agencies Navy (Department of the Navy) OSD (Office of the Secretary of Defense) Army (Department of the Army)	$478,116,931	0.2%	Rank history: #90 in FY2021, not on the FY2022–FY2023 lists and #68 in FY2025; up 58 since FY2023.
60	DAI Global LLC Top agencies USAID (US Agency for International Development)	$475,306,333	0.2%	Rank history: #88 in FY2021, #72 in FY2022, #67 in FY2023 and not on the FY2025 list; up 7 since FY2023.
61	Microsoft Corporation 2 awardees Top agencies Navy (Department of the Navy) Army (Department of the Army) USAF (Department of the Air Force)	$467,994,834	0.2%	Rank history: #57 in FY2021, #56 in FY2022, #60 in FY2023 and #73 in FY2025; down 1 since FY2023.
62	Applied Research Associates, Inc. 3 awardees Top agencies DTRA (Defense Threat Reduction Agency) Army (Department of the Army) USAF (Department of the Air Force)	$454,584,543	0.2%	Rank history: #79 in FY2021, #69 in FY2022, #56 in FY2023 and #64 in FY2025; down 6 since FY2023.
63	New TECH Solutions, Inc. Top agencies Navy (Department of the Navy) HHS (Department of Health and Human Services) DISA (Defense Information Systems Agency)	$454,383,571	0.2%	Rank history: #66 in FY2021, #68 in FY2022, #68 in FY2023 and #55 in FY2025; up 5 since FY2023.
64	AECOM Technical Services, Inc. Top agencies Navy (Department of the Navy) Army (Department of the Army) DHS (Department of Homeland Security)	$453,287,259	0.2%	Rank history: not on the FY2021–FY2023 lists and #84 in FY2025; new.
65	Oak Ridge Associated Universities, Incorporated Top agencies DOE (Department of Energy) HHS (Department of Health and Human Services) NASA (National Aeronautics and Space Administration)	$428,258,560	0.2%	Rank history: #72 in FY2021, #65 in FY2022, #70 in FY2023 and #93 in FY2025; up 5 since FY2023.
66	Asgn Incorporated Through ECS Federal, LLC Top agencies DHS (Department of Homeland Security) DOJ (Department of Justice) Army (Department of the Army)	$427,959,293	0.2%	Rank history: not on the FY2021–FY2023 lists and #50 in FY2025; new.
67	Carahsoft Technology Corp Top agencies Army (Department of the Army) USDA (Department of Agriculture) USAF (Department of the Air Force)	$414,370,595	0.2%	Rank history: not on the FY2021 list, #97 in FY2022, not on the FY2023 list and #59 in FY2025; up 34 since FY2023.
68	AECOM 37 awardees, including JT4 LLC, AECOM Services, Inc. and AECOM International Inc. Top agencies USAF (Department of the Air Force) Army (Department of the Army) Navy (Department of the Navy)	$399,559,113	0.2%	Rank history: #45 in FY2021, #39 in FY2022, #33 in FY2023 and not on the FY2025 list; down 35 since FY2023.
69	Acacia Center for Justice Top agencies HHS (Department of Health and Human Services) DOJ (Department of Justice)	$381,370,270	0.2%	Rank history: not on the FY2021–FY2023 lists and #91 in FY2025; new.
70	CGI Technologies and Solutions Inc. Through CGI Federal Inc. Top agencies VA (Department of Veterans Affairs) DOS (Department of State) HHS (Department of Health and Human Services)	$378,271,007	0.2%	Rank history: #30 in FY2021, #29 in FY2022, #34 in FY2023 and not on the FY2025 list; down 36 since FY2023.
71	World Wide Technology LLC Top agencies Army (Department of the Army) DOJ (Department of Justice) Navy (Department of the Navy)	$372,771,214	0.2%	Rank history: not on the FY2021–FY2022 lists, #96 in FY2023 and #75 in FY2025; up 25 since FY2023.
72	Scientific Research Corporation Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) OSD (Office of the Secretary of Defense)	$370,848,315	0.2%	Rank history: #100 in FY2021, not on the FY2022 list, #92 in FY2023 and #60 in FY2025; up 20 since FY2023.
73	LMI Consulting, LLC Top agencies DHS (Department of Homeland Security) Army (Department of the Army) HHS (Department of Health and Human Services)	$370,817,312	0.2%	Rank history: not on the FY2021–FY2023 lists and #80 in FY2025; up 62 since FY2023.
74	Four LLC Top agencies Treasury (Department of the Treasury) DHS (Department of Homeland Security) Navy (Department of the Navy)	$353,311,174	0.1%	Rank history: not on the FY2021–FY2022 lists, #84 in FY2023 and #96 in FY2025; up 10 since FY2023.
75	Westat, Inc. 2 awardees, including Insight Policy Research, Inc. Top agencies HHS (Department of Health and Human Services) ED (Department of Education) USDA (Department of Agriculture)	$349,283,828	0.1%	Rank history: #76 in FY2021, #78 in FY2022, not on the FY2023 list and not on the FY2025 list; up 32 since FY2023.
76	Kbr, Inc. 10 awardees, including KBR Wyle Services, LLC and Dependable Global Solutions, LLC Top agencies NASA (National Aeronautics and Space Administration) Army (Department of the Army) USAF (Department of the Air Force)	$342,361,029	0.1%	Rank history: #21 in FY2021, #24 in FY2022, #22 in FY2023 and not on the FY2025 list; down 54 since FY2023.
77	Noblis, Inc. 2 awardees, including Noblis MSD LLC Top agencies DOT (Department of Transportation) DTRA (Defense Threat Reduction Agency) DHS (Department of Homeland Security)	$339,326,232	0.1%	Rank history: #99 in FY2021, #71 in FY2022, #74 in FY2023 and #86 in FY2025; down 3 since FY2023.
78	The Johns Hopkins University 3 awardees, including The Johns Hopkins University Applied Physics Laboratory LLC Top agencies NASA (National Aeronautics and Space Administration) Navy (Department of the Navy) MDA (DOD Missile Defense Agency)	$336,008,869	0.1%	Rank history: #20 in FY2021, #19 in FY2022, #16 in FY2023 and not on the FY2025 list; down 62 since FY2023.
79	DCS Corporation 2 awardees Top agencies Army (Department of the Army) USAF (Department of the Air Force) Navy (Department of the Navy)	$332,805,575	0.1%	Rank history: #69 in FY2021, #81 in FY2022, #79 in FY2023 and #71 in FY2025; unchanged since FY2023.
80	The Pennsylvania State University 2 awardees Top agencies Navy (Department of the Navy) OSD (Office of the Secretary of Defense) DTRA (Defense Threat Reduction Agency)	$326,058,198	0.1%	Rank history: not on the FY2021–FY2022 lists, #97 in FY2023 and #79 in FY2025; up 17 since FY2023.
81	Ernst & Young LLP 2 awardees Top agencies Army (Department of the Army) CNCS (Corporation for National and Community Service) HUD (Department of Housing and Urban Development)	$318,918,852	0.1%	Rank history: not on the FY2021–FY2023 lists and #54 in FY2025; new.
82	Livanta LLC Top agencies HHS (Department of Health and Human Services)	$314,839,247	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
83	Mantech Advanced Systems International, Inc. Top agencies Navy (Department of the Navy) DHS (Department of Homeland Security) DHA (Defense Health Agency)	$312,483,313	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
84	Jacobs Engineering Group Inc. 25 awardees, including Amentum Technology, Inc., Ch2M Hill - CDM Pa-Tac Recovery Services and Ch2M Hill, Inc. Top agencies MDA (DOD Missile Defense Agency) NASA (National Aeronautics and Space Administration) USAF (Department of the Air Force)	$309,482,254	0.1%	Rank history: #15 in FY2021, #15 in FY2022, #21 in FY2023 and not on the FY2025 list; down 63 since FY2023.
85	Linquest Corporation 2 awardees Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) Army (Department of the Army)	$308,159,282	0.1%	Rank history: #89 in FY2021, #100 in FY2022, #89 in FY2023 and #70 in FY2025; up 4 since FY2023.
86	The Interpublic Group of Companies Inc 3 awardees, including IPG Dxtra, Inc. Top agencies HHS (Department of Health and Human Services)	$307,424,519	0.1%	Rank history: #55 in FY2021, #66 in FY2022, #71 in FY2023 and not on the FY2025 list; down 15 since FY2023.
87	Keystone Peer Review Organization, LLC 2 awardees, including Ohio Kepro, LLC Top agencies HHS (Department of Health and Human Services)	$305,174,494	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
88	Salient Crgt, Inc. Top agencies USAF (Department of the Air Force) VA (Department of Veterans Affairs) EPA (Environmental Protection Agency)	$297,834,071	0.1%	Rank history: not on the FY2021–FY2023 lists and #40 in FY2025; up 179 since FY2023.
89	Odyssey Systems Consulting Group Ltd. Top agencies USAF (Department of the Air Force) Navy (Department of the Navy)	$294,717,568	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
90	Nana Regional Corporation Inc. 9 awardees, including Affigent, LLC, Akima Data Management LLC and TKC Global Solutions, LLC Top agencies DHS (Department of Homeland Security) HHS (Department of Health and Human Services) Army (Department of the Army)	$290,508,084	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
91	H.i.g. Capital Management Inc. 2 awardees, including Iron Bow Technologies, LLC and Empower AI, Inc. Top agencies DISA (Defense Information Systems Agency) USAF (Department of the Air Force) GSA (General Services Administration)	$287,567,661	0.1%	Rank history: not on the FY2021 list, #77 in FY2022, #62 in FY2023 and not on the FY2025 list; down 29 since FY2023.
92	Kpmg LLP Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency) HHS (Department of Health and Human Services)	$286,755,366	0.1%	Rank history: not on the FY2021–FY2023 lists and #62 in FY2025; new.
93	Battelle Savannah River Alliance, LLC Top agencies DOE (Department of Energy)	$278,585,044	0.1%	Rank history: not on the FY2021–FY2023 lists and #83 in FY2025; new.
94	Advanced Technology Systems Inc. 3 awardees, including Salient Crgt, Inc. Top agencies VA (Department of Veterans Affairs) USAF (Department of the Air Force) DHS (Department of Homeland Security)	$275,518,000	0.1%	Rank history: #75 in FY2021, not on the FY2022 list, #59 in FY2023 and not on the FY2025 list; down 35 since FY2023.
95	American Systems Corporation Top agencies Navy (Department of the Navy) OSD (Office of the Secretary of Defense) DHA (Defense Health Agency)	$274,033,655	0.1%	Rank history: not on the FY2021–FY2023 lists and #92 in FY2025; up 16 since FY2023.
96	Institute for Defense Analyses Top agencies OSD (Office of the Secretary of Defense) WHS (DOD Washington Headquarters Service) NSF (National Science Foundation)	$270,639,952	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 29 since FY2023.
97	The Rand Corporation Top agencies OSD (Office of the Secretary of Defense) DHS (Department of Homeland Security) USAF (Department of the Air Force)	$266,268,226	0.1%	Rank history: #98 in FY2021, #98 in FY2022, #99 in FY2023 and not on the FY2025 list; up 2 since FY2023.
98	Advanced Computer Concepts, Inc. Top agencies Navy (Department of the Navy) DISA (Defense Information Systems Agency) USDA (Department of Agriculture)	$265,896,776	0.1%	Rank history: not on the FY2021–FY2023 lists and #99 in FY2025; up 16 since FY2023.
99	It Concepts, Inc. Top agencies VA (Department of Veterans Affairs) SSA (Social Security Administration) USAID (US Agency for International Development)	$263,543,209	0.1%	Rank history: not on the FY2021–FY2023 lists and #97 in FY2025; up 99 since FY2023.
100	Iron Bow Technologies, LLC Top agencies VA (Department of Veterans Affairs) USAF (Department of the Air Force) DISA (Defense Information Systems Agency)	$262,701,928	0.1%	Rank history: not on the FY2021–FY2023 lists and #76 in FY2025; new.

Rankings for the codes under NAICS 54

How this ranking works

• Source: every contract action FPDS records (as published on SAM.gov) in the period, as GovTribe received it.
• Amounts are net obligations: what was obligated, less what was deobligated. Shares are of $246 billion obligated before deobligations, so they never pass 100%.
• Parent companies: each action counts under the ultimate parent its award record names, or under the awardee when it names none, so no dollar counts twice. Parents of the same name (Inc., LLC and the like aside) count as one company, since FPDS records a company's parent under more than one UEI over time. GovTribe corrects a few parents and names by hand; see the corrections.
• Fiscal year 2024 ran Oct 1, 2023 – Sep 30, 2024. The Department of Defense reports its contract actions to FPDS about 90 days late, so a fiscal year is ranked once they're in, in February, and the list doesn't change after.
• Rank changes compare with FY2023. "New" marks a company outside that period's top 500, and "Returned" one of those that was on an earlier fiscal year's list.
• Rank lines show each company's rank on every fiscal year's list since FY2021, #1 at the top, on a scale that gives the top of the list more room. A dashed stretch spans years it wasn't on the list. The step from FY2023 takes the color of the rank change beside it.
• Placeholder recipients FPDS uses when it names no company ("Miscellaneous Foreign Contractors" and the like) aren't ranked.

Quick answers